Distributions of individual flux measurements with respect to the final flux estimate and uncertainty in KV450. Here we show per-band PDFs of σ_Δi, which demonstrates the accuracy of the final flux uncertainties for sources in KV450 (see text for details). We overlay on each distribution a Gaussian model that describes well the core of each distribution, providing the mean (μ), standard deviation (σ), and mixture fraction of the Gaussian given the total PDF (λ). We find that the final fluxes and uncertainties are generally a good description of the individual data, with typically > 70% of all individual (per-detector) flux estimates being well described by the simple Gaussian statistics. The wings of these distributions are caused by the existence of non-Gaussian noise components not encoded by the GAaP uncertainties (e.g. zero point uncertainties). We note that the J-band, however, has uncertainties that are underestimated by roughly 30%. Each panel is annotated with the kernel used in the PDF estimation, showing the width of the kernel and its log-bandwidth (bw).